Can session autoload?

Unfortunately what loved a Codeigniter earlier now for was lost - documentation very bad
I create new project on CI 4
How i can autoload session
app/Config/Autoload.php

Code:

$psr4 = [
            'Config'      => APPPATH . 'Config',
            APP_NAMESPACE => APPPATH,                // For custom namespace
            'App'         => APPPATH,                // To ensure filters, etc still found,
            'Session'     => SYSPATH . 'Session',
            
        ];

Result - Warning: Use of undefined constant SYSPATH - assumed 'SYSPATH' (this will throw an Error in a future version of PHP)
Help

You can load session as

Code:

$session = \Config\Services::session($config);

in BaseController

I don't use BaseController, i wont load session library in autoload, construction $session = \Config\Services:ession($config) - not work in app/Config/Autoload.php

The BaseController is intended to be the mechanism for providing the equivalent of autoloading from CI3 ... https://codeigniter4.github.io/userguide...oller.html

Your first post above is trying to create a Sessions namespace, which is not provided for in the framework.

CI4's app/Config/Autoload is meant to tell the PHP class loader where to find source code, and not to preload components for a request.